Size: -6 AN, (9/16"x18) Thread, Shut Off Valves Black.Fitting Size: AN6, Metal Tube OD 3/8", 9/16"-18 SAE Thread Size, 3/8"-18 NPT Thread Size. Shut-Off Valve Size: 4.5x2.5x2.2cm / 1.77"x0.98"x0.87"(ID:8mm/0.31"). Feature: Inline, Male Fitting. Made of High Performance Lightweight 6061-T6 Billet Aluminum Material Flow Control Valves. Simply turn the valve to stop fuel flow with handle Overall length tip to tip is 85.5mm. Fuel Diesel Oil Race car,Street car Street Rod Makes it convenient to check and clean a fuel filter without taking a bath in fuel.